Inner Seal With A Sub Tab Layer
AssigneeSelig Sealing Products, Inc.
InventorRobert William Thorstensen-Woll
Life of this patent
Estimating the term…
Abstract
A pull-tab sealing member for a container containing an upper laminate forming a pull-tab bonded to a lower laminate capable of being heat sealed to a container's mouth or opening. The upper laminate defines the pull tab wholly within a perimeter or circumference of the seal. The sealing member further includes a sub tab layer or member under the gripping tab for concentric structural support.
Claims21
A concentrically stable tabbed sealing member with a foam layer for sealing to a rim surrounding a container opening, the sealing member comprising:
- a multi-layer laminate including an upper laminate portion partially bonded to a lower laminate portion forming a gripping tab defined wholly within a perimeter of the sealing member, the gripping tab for removing the sealing member from a container opening;
- the lower laminate portion below the gripping tab including at least a heat seal layer for bonding to the container rim, a metal layer for heating the heat seal layer, and a polymer foam layer above the metal layer;
- a non-foam polymer sub-tab layer positioned between the polymer foam layer and the gripping tab;
- and
- the non-foam polymer sub-tab layer coextensive with at least the gripping tab at a periphery thereof to provide structural support to the polymer foam layer at its periphery, thereby, protecting the structural integrity of the polymer foam layer from effects of heat sealing the tabbed sealing member to a container rim.
A container and cap assembly including a concentrically stable tabbed sealing member with foam for sealing to a rim surrounding an opening of the container, the assembly comprising:
- a container with a rim surrounding an opening thereof;
- a cap for closing the opening of the container;
- a multi-layer laminate including an upper laminate portion partially bonded to a lower laminate portion forming a gripping tab defined wholly within a perimeter of the sealing member, the multi-layer laminate bonded to the container rim;
- the lower laminate portion below the gripping tab including at least a seal layer for bonding to the container rim, a metal layer for heating the seal layer, and a polymer foam layer above the metal layer;
- a polymer film sub-tab layer between the polymer foam layer and the gripping tab;
- and
- the polymer film sub-tab layer coextensive with at least the gripping tab at its periphery thereof to provide structural support to the polymer foam layer at its periphery, thereby, protecting the structural integrity of the polymer foam layer from effects of heat sealing the tabbed sealing member to the container rim.
-29. (canceled)
Dependencies are inferred from the claim text.